Answer
Sep 22, 2025 - 10:44 AM
Our SealGreen Gray-Out Waterless Oil Cleaner was designed to clean organic stains. Car oils are mostly organic except for the new synthetic oils. Gray-Out will clean the synthetic as well but it will take much longer that a regular organic oil. Brake Fluid is a hydraulic oil which is complete man made. Gray-Out has a good possibility of cleaning the stain but it will take some time and several applications. We have not assessed cleaning brake fluid with Gray-Out and we offer no guarantees or refunds that it will work. I suggest buying a pint of the product and test to see if it works.
Source: SealGreen - Website
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